BA 194 then F9 3136 at Houston
London → Houston → Chicago
Timetable, Houston time
15:56BA 194 from London at the gate
17:06F9 3136 to Chicago leaves the gate
1 h 10 apart on the timetable
The last days
BA 194 and F9 3136 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.